MacGeneration is reporting that Apple plans to take the wrapping off of Safari 5 at this Monday’s WWDC event, and they’ve gotten ahold of some support documents which lay out many of the new features in Apple’s homegrown web browser.

Safari 5 is a major upgrade, and will include 25% faster JavaScript performance along with DNS prefetching and improved caching to significantly increase page load times. Also on tap is improved HTML 5 support for new features such as geolocation and full screen HTML 5 video, smarter address fields, and hardware acceleration for the Windows version of Safari.

One of the more notable new additions to Safari 5 is dubbed Safari Reader, a feature which places a Reader icon in the browser and enables users to read articles “in a single, clutter-free page” by extracting only the pertinent information from an article and presumably doing away with ads and tangential photos and text.

Also worth mentioning is that Safari 5 will include the option to make Microsoft’s Bing the default search engine.

As you can tell, none of the release notes hint at extension support, though John Gruber previously hinted that Apple would announce an extension API for Safari at WWDC, so we’ll have to wait and see if that comes to fruition.